You can download the update directly on your Android device through the Google Play Store or by using the following link:
|Requirements||Varies with device|
Usually the update takes a few days before it is pushed to all regions through the Google Play Store. If you dont want to wait for the update to arrive, you could consider downloading and installing the official APK instead. The APK is signed by the developer and upgrades your existing app. The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
Version: 9.4.0 (904010112) (Android 4.2+)
The updated Google Maps for Android offers similar functionality to Yelp's Elite Reviewers. All you have to do is sign up, start reviewing, and you will move up the ranks as your number of reviews increases. After 50 reviews, the Local Guides badge appears. Given that Google has decided to compete with Yelp, it makes sense that they'd want to do this.
You can sign up at the Local Guides page and start reviewing right away. Otherwise, you can download the Maps update and just enjoy Google's increased attention to crowd-sourced ratings.
Unfortunately there is no clear way of weeding out not-so-great reviewers, but we expect the poor reviews will eventually get replaced or moved out of sight. At this point Google will probably want to focus on quantity and not quality anyway.